[linux-2.6-block.git] / include / acpi / processor.h

#ifndef __ACPI_PROCESSOR_H
#define __ACPI_PROCESSOR_H

#include <linux/kernel.h>
#include <linux/cpu.h>
#include <linux/thermal.h>
#include <asm/acpi.h>

#define ACPI_PROCESSOR_CLASS		"processor"
#define ACPI_PROCESSOR_DEVICE_NAME	"Processor"
#define ACPI_PROCESSOR_DEVICE_HID	"ACPI0007"
#define ACPI_PROCESSOR_CONTAINER_HID	"ACPI0010"

#define ACPI_PROCESSOR_BUSY_METRIC	10

#define ACPI_PROCESSOR_MAX_POWER	8
#define ACPI_PROCESSOR_MAX_C2_LATENCY	100
#define ACPI_PROCESSOR_MAX_C3_LATENCY	1000

#define ACPI_PROCESSOR_MAX_THROTTLING	16
#define ACPI_PROCESSOR_MAX_THROTTLE	250	/* 25% */
#define ACPI_PROCESSOR_MAX_DUTY_WIDTH	4

#define ACPI_PDC_REVISION_ID		0x1

#define ACPI_PSD_REV0_REVISION		0	/* Support for _PSD as in ACPI 3.0 */
#define ACPI_PSD_REV0_ENTRIES		5

#define ACPI_TSD_REV0_REVISION		0	/* Support for _PSD as in ACPI 3.0 */
#define ACPI_TSD_REV0_ENTRIES		5
/*
 * Types of coordination defined in ACPI 3.0. Same macros can be used across
 * P, C and T states
 */
#define DOMAIN_COORD_TYPE_SW_ALL	0xfc
#define DOMAIN_COORD_TYPE_SW_ANY	0xfd
#define DOMAIN_COORD_TYPE_HW_ALL	0xfe

#define ACPI_CSTATE_SYSTEMIO	0
#define ACPI_CSTATE_FFH		1
#define ACPI_CSTATE_HALT	2
#define ACPI_CSTATE_INTEGER	3

#define ACPI_CX_DESC_LEN	32

/* Power Management */

struct acpi_processor_cx;

struct acpi_power_register {
	u8 descriptor;
	u16 length;
	u8 space_id;
	u8 bit_width;
	u8 bit_offset;
	u8 access_size;
	u64 address;
} __packed;

struct acpi_processor_cx {
	u8 valid;
	u8 type;
	u32 address;
	u8 entry_method;
	u8 index;
	u32 latency;
	u8 bm_sts_skip;
	char desc[ACPI_CX_DESC_LEN];
};

struct acpi_lpi_state {
	u32 min_residency;
	u32 wake_latency; /* worst case */
	u32 flags;
	u32 arch_flags;
	u32 res_cnt_freq;
	u32 enable_parent_state;
	u64 address;
	u8 index;
	u8 entry_method;
	char desc[ACPI_CX_DESC_LEN];
};

struct acpi_processor_power {
	int count;
	union {
		struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
		struct acpi_lpi_state lpi_states[ACPI_PROCESSOR_MAX_POWER];
	};
	int timer_broadcast_on_state;
};

/* Performance Management */

struct acpi_psd_package {
	u64 num_entries;
	u64 revision;
	u64 domain;
	u64 coord_type;
	u64 num_processors;
} __packed;

struct acpi_pct_register {
	u8 descriptor;
	u16 length;
	u8 space_id;
	u8 bit_width;
	u8 bit_offset;
	u8 reserved;
	u64 address;
} __packed;

struct acpi_processor_px {
	u64 core_frequency;	/* megahertz */
	u64 power;	/* milliWatts */
	u64 transition_latency;	/* microseconds */
	u64 bus_master_latency;	/* microseconds */
	u64 control;	/* control value */
	u64 status;	/* success indicator */
};

struct acpi_processor_performance {
	unsigned int state;
	unsigned int platform_limit;
	struct acpi_pct_register control_register;
	struct acpi_pct_register status_register;
	unsigned int state_count;
	struct acpi_processor_px *states;
	struct acpi_psd_package domain_info;
	cpumask_var_t shared_cpu_map;
	unsigned int shared_type;
};

/* Throttling Control */

struct acpi_tsd_package {
	u64 num_entries;
	u64 revision;
	u64 domain;
	u64 coord_type;
	u64 num_processors;
} __packed;

struct acpi_ptc_register {
	u8 descriptor;
	u16 length;
	u8 space_id;
	u8 bit_width;
	u8 bit_offset;
	u8 reserved;
	u64 address;
} __packed;

struct acpi_processor_tx_tss {
	u64 freqpercentage;	/* */
	u64 power;	/* milliWatts */
	u64 transition_latency;	/* microseconds */
	u64 control;	/* control value */
	u64 status;	/* success indicator */
};
struct acpi_processor_tx {
	u16 power;
	u16 performance;
};

struct acpi_processor;
struct acpi_processor_throttling {
	unsigned int state;
	unsigned int platform_limit;
	struct acpi_pct_register control_register;
	struct acpi_pct_register status_register;
	unsigned int state_count;
	struct acpi_processor_tx_tss *states_tss;
	struct acpi_tsd_package domain_info;
	cpumask_var_t shared_cpu_map;
	int (*acpi_processor_get_throttling) (struct acpi_processor * pr);
	int (*acpi_processor_set_throttling) (struct acpi_processor * pr,
					      int state, bool force);

	u32 address;
	u8 duty_offset;
	u8 duty_width;
	u8 tsd_valid_flag;
	unsigned int shared_type;
	struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
};

/* Limit Interface */

struct acpi_processor_lx {
	int px;			/* performance state */
	int tx;			/* throttle level */
};

struct acpi_processor_limit {
	struct acpi_processor_lx state;	/* current limit */
	struct acpi_processor_lx thermal;	/* thermal limit */
	struct acpi_processor_lx user;	/* user limit */
};

struct acpi_processor_flags {
	u8 power:1;
	u8 performance:1;
	u8 throttling:1;
	u8 limit:1;
	u8 bm_control:1;
	u8 bm_check:1;
	u8 has_cst:1;
	u8 has_lpi:1;
	u8 power_setup_done:1;
	u8 bm_rld_set:1;
	u8 need_hotplug_init:1;
};

struct acpi_processor {
	acpi_handle handle;
	u32 acpi_id;
	phys_cpuid_t phys_id;	/* CPU hardware ID such as APIC ID for x86 */
	u32 id;		/* CPU logical ID allocated by OS */
	u32 pblk;
	int performance_platform_limit;
	int throttling_platform_limit;
	/* 0 - states 0..n-th state available */

	struct acpi_processor_flags flags;
	struct acpi_processor_power power;
	struct acpi_processor_performance *performance;
	struct acpi_processor_throttling throttling;
	struct acpi_processor_limit limit;
	struct thermal_cooling_device *cdev;
	struct device *dev; /* Processor device. */
};

struct acpi_processor_errata {
	u8 smp;
	struct {
		u8 throttle:1;
		u8 fdma:1;
		u8 reserved:6;
		u32 bmisx;
	} piix4;
};

extern int acpi_processor_preregister_performance(struct
						  acpi_processor_performance
						  __percpu *performance);

extern int acpi_processor_register_performance(struct acpi_processor_performance
					       *performance, unsigned int cpu);
extern void acpi_processor_unregister_performance(unsigned int cpu);

/* note: this locks both the calling module and the processor module
         if a _PPC object exists, rmmod is disallowed then */
int acpi_processor_notify_smm(struct module *calling_module);

/* parsing the _P* objects. */
extern int acpi_processor_get_performance_info(struct acpi_processor *pr);

/* for communication between multiple parts of the processor kernel module */
DECLARE_PER_CPU(struct acpi_processor *, processors);
extern struct acpi_processor_errata errata;

#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
					unsigned int cpu);
int acpi_processor_ffh_cstate_probe(unsigned int cpu,
				    struct acpi_processor_cx *cx,
				    struct acpi_power_register *reg);
void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
#else
static inline void acpi_processor_power_init_bm_check(struct
						      acpi_processor_flags
						      *flags, unsigned int cpu)
{
	flags->bm_check = 1;
	return;
}
static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
						  struct acpi_processor_cx *cx,
						  struct acpi_power_register
						  *reg)
{
	return -1;
}
static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
						   *cstate)
{
	return;
}
#endif

/* in processor_perflib.c */

#ifdef CONFIG_CPU_FREQ
void acpi_processor_ppc_init(void);
void acpi_processor_ppc_exit(void);
int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
#else
static inline void acpi_processor_ppc_init(void)
{
	return;
}
static inline void acpi_processor_ppc_exit(void)
{
	return;
}
static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr,
								int event_flag)
{
	static unsigned int printout = 1;
	if (printout) {
		printk(KERN_WARNING
		       "Warning: Processor Platform Limit event detected, but not handled.\n");
		printk(KERN_WARNING
		       "Consider compiling CPUfreq support into your kernel.\n");
		printout = 0;
	}
	return 0;
}
static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
{
	return -ENODEV;
}

#endif				/* CONFIG_CPU_FREQ */

/* in processor_core.c */
phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);

#ifdef CONFIG_ACPI_CPPC_LIB
extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
#else
static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
{
	return 0;
}
static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
{
	return;
}
#endif	/* CONFIG_ACPI_CPPC_LIB */

/* in processor_pdc.c */
void acpi_processor_set_pdc(acpi_handle handle);

/* in processor_throttling.c */
#ifdef CONFIG_ACPI_CPU_FREQ_PSS
int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
int acpi_processor_get_throttling_info(struct acpi_processor *pr);
extern int acpi_processor_set_throttling(struct acpi_processor *pr,
					 int state, bool force);
/*
 * Reevaluate whether the T-state is invalid after one cpu is
 * onlined/offlined. In such case the flags.throttling will be updated.
 */
extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
			unsigned long action);
extern const struct file_operations acpi_processor_throttling_fops;
extern void acpi_processor_throttling_init(void);
#else
static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
{
	return 0;
}

static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
					 int state, bool force)
{
	return -ENODEV;
}

static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
			unsigned long action) {}

static inline void acpi_processor_throttling_init(void) {}
#endif	/* CONFIG_ACPI_CPU_FREQ_PSS */

/* in processor_idle.c */
extern struct cpuidle_driver acpi_idle_driver;
#ifdef CONFIG_ACPI_PROCESSOR_IDLE
int acpi_processor_power_init(struct acpi_processor *pr);
int acpi_processor_power_exit(struct acpi_processor *pr);
int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
int acpi_processor_hotplug(struct acpi_processor *pr);
#else
static inline int acpi_processor_power_init(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_power_exit(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_hotplug(struct acpi_processor *pr)
{
	return -ENODEV;
}
#endif /* CONFIG_ACPI_PROCESSOR_IDLE */

/* in processor_thermal.c */
int acpi_processor_get_limit_info(struct acpi_processor *pr);
extern const struct thermal_cooling_device_ops processor_cooling_ops;
#if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ)
void acpi_thermal_cpufreq_init(void);
void acpi_thermal_cpufreq_exit(void);
#else
static inline void acpi_thermal_cpufreq_init(void)
{
	return;
}
static inline void acpi_thermal_cpufreq_exit(void)
{
	return;
}
#endif	/* CONFIG_ACPI_CPU_FREQ_PSS */

#endif
Commit	Line	Data
	1	#ifndef __ACPI_PROCESSOR_H
	2	#define __ACPI_PROCESSOR_H
	3
	4	#include <linux/kernel.h>
	5	#include <linux/cpu.h>
	6	#include <linux/thermal.h>
	7	#include <asm/acpi.h>
	8
	9	#define ACPI_PROCESSOR_CLASS "processor"
	10	#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
	11	#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
	12	#define ACPI_PROCESSOR_CONTAINER_HID "ACPI0010"
	13
	14	#define ACPI_PROCESSOR_BUSY_METRIC 10
	15
	16	#define ACPI_PROCESSOR_MAX_POWER 8
	17	#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
	18	#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
	19
	20	#define ACPI_PROCESSOR_MAX_THROTTLING 16
	21	#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
	22	#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
	23
	24	#define ACPI_PDC_REVISION_ID 0x1
	25
	26	#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
	27	#define ACPI_PSD_REV0_ENTRIES 5
	28
	29	#define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
	30	#define ACPI_TSD_REV0_ENTRIES 5
	31	/*
	32	* Types of coordination defined in ACPI 3.0. Same macros can be used across
	33	* P, C and T states
	34	*/
	35	#define DOMAIN_COORD_TYPE_SW_ALL 0xfc
	36	#define DOMAIN_COORD_TYPE_SW_ANY 0xfd
	37	#define DOMAIN_COORD_TYPE_HW_ALL 0xfe
	38
	39	#define ACPI_CSTATE_SYSTEMIO 0
	40	#define ACPI_CSTATE_FFH 1
	41	#define ACPI_CSTATE_HALT 2
	42	#define ACPI_CSTATE_INTEGER 3
	43
	44	#define ACPI_CX_DESC_LEN 32
	45
	46	/* Power Management */
	47
	48	struct acpi_processor_cx;
	49
	50	struct acpi_power_register {
	51	u8 descriptor;
	52	u16 length;
	53	u8 space_id;
	54	u8 bit_width;
	55	u8 bit_offset;
	56	u8 access_size;
	57	u64 address;
	58	} __packed;
	59
	60	struct acpi_processor_cx {
	61	u8 valid;
	62	u8 type;
	63	u32 address;
	64	u8 entry_method;
	65	u8 index;
	66	u32 latency;
	67	u8 bm_sts_skip;
	68	char desc[ACPI_CX_DESC_LEN];
	69	};
	70
	71	struct acpi_lpi_state {
	72	u32 min_residency;
	73	u32 wake_latency; /* worst case */
	74	u32 flags;
	75	u32 arch_flags;
	76	u32 res_cnt_freq;
	77	u32 enable_parent_state;
	78	u64 address;
	79	u8 index;
	80	u8 entry_method;
	81	char desc[ACPI_CX_DESC_LEN];
	82	};
	83
	84	struct acpi_processor_power {
	85	int count;
	86	union {
	87	struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
	88	struct acpi_lpi_state lpi_states[ACPI_PROCESSOR_MAX_POWER];
	89	};
	90	int timer_broadcast_on_state;
	91	};
	92
	93	/* Performance Management */
	94
	95	struct acpi_psd_package {
	96	u64 num_entries;
	97	u64 revision;
	98	u64 domain;
	99	u64 coord_type;
	100	u64 num_processors;
	101	} __packed;
	102
	103	struct acpi_pct_register {
	104	u8 descriptor;
	105	u16 length;
	106	u8 space_id;
	107	u8 bit_width;
	108	u8 bit_offset;
	109	u8 reserved;
	110	u64 address;
	111	} __packed;
	112
	113	struct acpi_processor_px {
	114	u64 core_frequency; /* megahertz */
	115	u64 power; /* milliWatts */
	116	u64 transition_latency; /* microseconds */
	117	u64 bus_master_latency; /* microseconds */
	118	u64 control; /* control value */
	119	u64 status; /* success indicator */
	120	};
	121
	122	struct acpi_processor_performance {
	123	unsigned int state;
	124	unsigned int platform_limit;
	125	struct acpi_pct_register control_register;
	126	struct acpi_pct_register status_register;
	127	unsigned int state_count;
	128	struct acpi_processor_px *states;
	129	struct acpi_psd_package domain_info;
	130	cpumask_var_t shared_cpu_map;
	131	unsigned int shared_type;
	132	};
	133
	134	/* Throttling Control */
	135
	136	struct acpi_tsd_package {
	137	u64 num_entries;
	138	u64 revision;
	139	u64 domain;
	140	u64 coord_type;
	141	u64 num_processors;
	142	} __packed;
	143
	144	struct acpi_ptc_register {
	145	u8 descriptor;
	146	u16 length;
	147	u8 space_id;
	148	u8 bit_width;
	149	u8 bit_offset;
	150	u8 reserved;
	151	u64 address;
	152	} __packed;
	153
	154	struct acpi_processor_tx_tss {
	155	u64 freqpercentage; /* */
	156	u64 power; /* milliWatts */
	157	u64 transition_latency; /* microseconds */
	158	u64 control; /* control value */
	159	u64 status; /* success indicator */
	160	};
	161	struct acpi_processor_tx {
	162	u16 power;
	163	u16 performance;
	164	};
	165
	166	struct acpi_processor;
	167	struct acpi_processor_throttling {
	168	unsigned int state;
	169	unsigned int platform_limit;
	170	struct acpi_pct_register control_register;
	171	struct acpi_pct_register status_register;
	172	unsigned int state_count;
	173	struct acpi_processor_tx_tss *states_tss;
	174	struct acpi_tsd_package domain_info;
	175	cpumask_var_t shared_cpu_map;
	176	int (acpi_processor_get_throttling) (struct acpi_processor pr);
	177	int (acpi_processor_set_throttling) (struct acpi_processor pr,
	178	int state, bool force);
	179
	180	u32 address;
	181	u8 duty_offset;
	182	u8 duty_width;
	183	u8 tsd_valid_flag;
	184	unsigned int shared_type;
	185	struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
	186	};
	187
	188	/* Limit Interface */
	189
	190	struct acpi_processor_lx {
	191	int px; /* performance state */
	192	int tx; /* throttle level */
	193	};
	194
	195	struct acpi_processor_limit {
	196	struct acpi_processor_lx state; /* current limit */
	197	struct acpi_processor_lx thermal; /* thermal limit */
	198	struct acpi_processor_lx user; /* user limit */
	199	};
	200
	201	struct acpi_processor_flags {
	202	u8 power:1;
	203	u8 performance:1;
	204	u8 throttling:1;
	205	u8 limit:1;
	206	u8 bm_control:1;
	207	u8 bm_check:1;
	208	u8 has_cst:1;
	209	u8 has_lpi:1;
	210	u8 power_setup_done:1;
	211	u8 bm_rld_set:1;
	212	u8 need_hotplug_init:1;
	213	};
	214
	215	struct acpi_processor {
	216	acpi_handle handle;
	217	u32 acpi_id;
	218	phys_cpuid_t phys_id; /* CPU hardware ID such as APIC ID for x86 */
	219	u32 id; /* CPU logical ID allocated by OS */
	220	u32 pblk;
	221	int performance_platform_limit;
	222	int throttling_platform_limit;
	223	/* 0 - states 0..n-th state available */
	224
	225	struct acpi_processor_flags flags;
	226	struct acpi_processor_power power;
	227	struct acpi_processor_performance *performance;
	228	struct acpi_processor_throttling throttling;
	229	struct acpi_processor_limit limit;
	230	struct thermal_cooling_device *cdev;
	231	struct device dev; / Processor device. */
	232	};
	233
	234	struct acpi_processor_errata {
	235	u8 smp;
	236	struct {
	237	u8 throttle:1;
	238	u8 fdma:1;
	239	u8 reserved:6;
	240	u32 bmisx;
	241	} piix4;
	242	};
	243
	244	extern int acpi_processor_preregister_performance(struct
	245	acpi_processor_performance
	246	__percpu *performance);
	247
	248	extern int acpi_processor_register_performance(struct acpi_processor_performance
	249	*performance, unsigned int cpu);
	250	extern void acpi_processor_unregister_performance(unsigned int cpu);
	251
	252	/* note: this locks both the calling module and the processor module
	253	if a _PPC object exists, rmmod is disallowed then */
	254	int acpi_processor_notify_smm(struct module *calling_module);
	255
	256	/* parsing the _P* objects. */
	257	extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
	258
	259	/* for communication between multiple parts of the processor kernel module */
	260	DECLARE_PER_CPU(struct acpi_processor *, processors);
	261	extern struct acpi_processor_errata errata;
	262
	263	#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
	264	void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
	265	unsigned int cpu);
	266	int acpi_processor_ffh_cstate_probe(unsigned int cpu,
	267	struct acpi_processor_cx *cx,
	268	struct acpi_power_register *reg);
	269	void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
	270	#else
	271	static inline void acpi_processor_power_init_bm_check(struct
	272	acpi_processor_flags
	273	*flags, unsigned int cpu)
	274	{
	275	flags->bm_check = 1;
	276	return;
	277	}
	278	static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
	279	struct acpi_processor_cx *cx,
	280	struct acpi_power_register
	281	*reg)
	282	{
	283	return -1;
	284	}
	285	static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
	286	*cstate)
	287	{
	288	return;
	289	}
	290	#endif
	291
	292	/* in processor_perflib.c */
	293
	294	#ifdef CONFIG_CPU_FREQ
	295	void acpi_processor_ppc_init(void);
	296	void acpi_processor_ppc_exit(void);
	297	int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
	298	extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
	299	#else
	300	static inline void acpi_processor_ppc_init(void)
	301	{
	302	return;
	303	}
	304	static inline void acpi_processor_ppc_exit(void)
	305	{
	306	return;
	307	}
	308	static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr,
	309	int event_flag)
	310	{
	311	static unsigned int printout = 1;
	312	if (printout) {
	313	printk(KERN_WARNING
	314	"Warning: Processor Platform Limit event detected, but not handled.\n");
	315	printk(KERN_WARNING
	316	"Consider compiling CPUfreq support into your kernel.\n");
	317	printout = 0;
	318	}
	319	return 0;
	320	}
	321	static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
	322	{
	323	return -ENODEV;
	324	}
	325
	326	#endif /* CONFIG_CPU_FREQ */
	327
	328	/* in processor_core.c */
	329	phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
	330	phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
	331	int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
	332	int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
	333
	334	#ifdef CONFIG_ACPI_CPPC_LIB
	335	extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
	336	extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
	337	#else
	338	static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
	339	{
	340	return 0;
	341	}
	342	static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
	343	{
	344	return;
	345	}
	346	#endif /* CONFIG_ACPI_CPPC_LIB */
	347
	348	/* in processor_pdc.c */
	349	void acpi_processor_set_pdc(acpi_handle handle);
	350
	351	/* in processor_throttling.c */
	352	#ifdef CONFIG_ACPI_CPU_FREQ_PSS
	353	int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
	354	int acpi_processor_get_throttling_info(struct acpi_processor *pr);
	355	extern int acpi_processor_set_throttling(struct acpi_processor *pr,
	356	int state, bool force);
	357	/*
	358	* Reevaluate whether the T-state is invalid after one cpu is
	359	* onlined/offlined. In such case the flags.throttling will be updated.
	360	*/
	361	extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
	362	unsigned long action);
	363	extern const struct file_operations acpi_processor_throttling_fops;
	364	extern void acpi_processor_throttling_init(void);
	365	#else
	366	static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
	367	{
	368	return 0;
	369	}
	370
	371	static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
	372	{
	373	return -ENODEV;
	374	}
	375
	376	static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
	377	int state, bool force)
	378	{
	379	return -ENODEV;
	380	}
	381
	382	static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
	383	unsigned long action) {}
	384
	385	static inline void acpi_processor_throttling_init(void) {}
	386	#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
	387
	388	/* in processor_idle.c */
	389	extern struct cpuidle_driver acpi_idle_driver;
	390	#ifdef CONFIG_ACPI_PROCESSOR_IDLE
	391	int acpi_processor_power_init(struct acpi_processor *pr);
	392	int acpi_processor_power_exit(struct acpi_processor *pr);
	393	int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
	394	int acpi_processor_hotplug(struct acpi_processor *pr);
	395	#else
	396	static inline int acpi_processor_power_init(struct acpi_processor *pr)
	397	{
	398	return -ENODEV;
	399	}
	400
	401	static inline int acpi_processor_power_exit(struct acpi_processor *pr)
	402	{
	403	return -ENODEV;
	404	}
	405
	406	static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
	407	{
	408	return -ENODEV;
	409	}
	410
	411	static inline int acpi_processor_hotplug(struct acpi_processor *pr)
	412	{
	413	return -ENODEV;
	414	}
	415	#endif /* CONFIG_ACPI_PROCESSOR_IDLE */
	416
	417	/* in processor_thermal.c */
	418	int acpi_processor_get_limit_info(struct acpi_processor *pr);
	419	extern const struct thermal_cooling_device_ops processor_cooling_ops;
	420	#if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ)
	421	void acpi_thermal_cpufreq_init(void);
	422	void acpi_thermal_cpufreq_exit(void);
	423	#else
	424	static inline void acpi_thermal_cpufreq_init(void)
	425	{
	426	return;
	427	}
	428	static inline void acpi_thermal_cpufreq_exit(void)
	429	{
	430	return;
	431	}
	432	#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
	433
	434	#endif